AEHF-4 - Atlas V 551 (AV-073) - CCAFS SLC-41 - 17.10.2018, 04:15 UTC

Автор tnt22, 07.08.2018 00:55:26

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ЦитироватьJames Dean‏Подлинная учетная запись @flatoday_jdean 8 ч. назад

... Lockheed reports fourth #AEHF bird recently shipped to Cape for October launch from LC41 on ULA Atlas V.


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https://news.lockheedmartin.com/news-releases?item=128545
ЦитироватьPOWERFUL COMMUNICATIONS SATELLITE FOR U.S. AND ALLIES SHIPPED FOR LAUNCH
Fourth Advanced Extremely High Frequency satellite will create global capability


Lockheed Martin built and tested the fourth AEHF satellite in Sunnyvale, California, before shipping it for launch. Two other satellites are in production.
SUNNYVALE, Calif., Aug. 6, 2018 – Lockheed Martin (NYSE: LMT) shipped the fourth Advanced Extremely High Frequency (AEHF) military communications satellite July 27 to Cape Canaveral Air Force Station, Florida, where it will be prepared for an October liftoff aboard an Atlas V rocket.
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"Four AEHF satellites in orbit means protected global connectivity for those who need it most, from the president to deployed soldiers," said Michael Cacheiro, Lockheed Martin vice president of Protected Communications. "We offer powerful end-to-end systems so that more operational users can have assured connectivity in contested environments. Delivering this fourth satellite in orbit will be critical to the Air Force, as it will connect all four satellites on orbit, forming a geostationary ring to provide uninterrupted global communications."

AEHF communications are jam-proof and offer low probability of detection or interception, and the four-satellite constellation will be able to deliver that capability worldwide.

The satellite enables military communications with real-time video, battlefield maps and targeting data, boosted by a five-fold increase in individual user data rates. This delivery comes at a time when more troops are on the cusp of using AEHF's benefits with a new generation of terminals that will soon be available based on both DOD and commercial models.

The AEHF system provides vastly improved global, survivable, highly secure, protected communications for strategic command and tactical warfighters operating on ground, sea and air platforms. The system also serves international partners including Canada, the Netherlands and the United Kingdom. A single AEHF satellite provides greater total capacity than the entire legacy five-satellite Milstar constellation.

Lockheed Martin is under contract to deliver six AEHF satellites and the Mission Control Segment. The first three AEHF satellites are on orbit, and AEHF-5 and -6 are progressing on schedule. All satellites are assembled at the company's Sunnyvale, California, facility.
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https://www.patrick.af.mil/News/Article-Display/Article/1603293/aehf-4-arrives-in-florida-prepares-for-launch/
ЦитироватьAEHF-4 Arrives in Florida, Prepares for Launch
SMC Public Affairs / Published August 15, 2018


LOS ANGELES AIR FORCE BASE, Calif. --
The U.S. Air Force's Advanced Extremely High Frequency (AEHF) program completed a major program milestone on July 27, successfully delivering the AEHF-4 satellite to Cape Canaveral Air Force Station, Florida.

"AEHF-4 delivery and launch marks a significant milestone in fulfilling our communication commitment to the highest priority Department of Defense ground, sea, and air missions. It's an important asset for the warfighter and will be employed for years to come." said Lt. Gen. John Thompson, Space and Missiles Systems Center commander and Air Force program executive officer for space.

The delivery of AEHF-4 sets the path for final checkout of the space vehicle before launch. The satellite will be processed in the Astrotech Space Operations processing facility.

A combined government and contractor team is already executing the final ground activities including a Launch Base Confidence Test to verify satellite integrity after shipment, an intersegment test to verify communication compatibility from the satellite to the ground operations center, and the final battery reconditioning for launch. Following these activities, the satellite will be fueled and prepared for integration with the Atlas V launch vehicle.
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"The entire AEHF team met a number of program objectives leading to this important milestone" added Col. David Ashley, chief, Protected SATCOM Division. "There is great enthusiasm and excitement across our entire workforce." The AEHF-4 satellite is scheduled for launch from Cape Canaveral Air Force Station, Oct. 5.

The satellite was transported from the Lockheed Martin satellite integration facility in Sunnyvale, California, via a C-5 Galaxy aircraft. The C-5 crew from the 22nd Airlift Squadron, Travis Air Force Base, California, ensured the satellite was transported safely and according to the time sensitive schedule. The security support provided by the 129th Rescue Wing, California Air National Guard, was essential to the success of the mission. "Safe transport of the AEHF satellite was paramount and the total government and contractor team worked tirelessly to ensure mission success," Thompson said.

The AEHF constellation is designed to replace the Milstar satellite constellation. AEHF will continue to provide survivable, global, secure, protected, and jam-resistant communications for high-priority military ground, sea, and air assets.





A combined team of U.S. Air Force personnel and civilian ground support specialists load an Advanced Extremely High Frequency-4 communication satellite onto a Travis Air Force Base C-5M Super Galaxy, July 26 at Moffett Federal Airfield, Cailf. The satellite is headed to Cape Canaveral Air Force Station, Fla. The AEHF is a joint service communications satellite and provides global, secure, protected, survivable and jam-resistant communications for high-priority military ground, sea and air assets. (U.S. Air Force Photo by Heide Couch)
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tnt22

https://spaceflightnow.com/2018/09/07/air-force-releases-new-target-dates-for-upcoming-military-launches/
ЦитироватьAir Force releases new target dates for upcoming military launches
September 7, 2018 | Stephen Clark

...
The AEHF 4 spacecraft is poised to join the Air Force's fleet of Advanced Extremely High Frequency satellites with a launch scheduled from Cape Canaveral on Oct. 17 aboard a ULA Atlas 5 rocket.

The launch window opens shortly after midnight EDT (0400 GMT) on Oct. 17. The Atlas 5 rocket set to launch the AEHF 4 satellite will be powered by five strap-on solid rocket boosters — along with its RD-180 main engine — the biggest version of ULA's workhorse launcher.
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Built by Lockheed Martin, the AEHF satellites in geostationary orbit more than 22,000 miles (nearly 36,000 kilometers) above the equator provide secure, jam-proof communications for military commanders, government leaders and deployed forces. With four AEHF satellites in orbit, the encrypted network will have global reach, fully replacing the Air Force's aging Milstar system.


The AEHF 4 satellite after the completion of acoustic testing. Credit: Lockheed Martin

"Four AEHF satellites in orbit means protected global connectivity for those who need it most, from the president to deployed soldiers," said Michael Cacheiro, Lockheed Martin vice president of protected communications. "We offer powerful end-to-end systems so that more operational users can have assured connectivity in contested environments."

The AEHF 4 satellite arrived at Cape Canaveral on July 27 to begin final pre-launch testing, fueling and processing before its October liftoff.

"Delivering this fourth satellite in orbit will be critical to the Air Force, as it will connect all four satellites on orbit, forming a geostationary ring to provide uninterrupted global communications," Cacheiro said in a statement.

A fifth AEHF satellite is also being prepared for a potential launch on an Atlas 5 rocket next year, but that mission does not have a confirmed target launch date.
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tnt22

На сайте ULA открыта страница миссии

https://www.ulalaunch.com/missions/atlas-v-aehf-4

ЦитироватьATLAS V TO LAUNCH AEHF-4



• Rocket: Atlas V 551
• Mission: AEHF-4
• Launch Location: Space Launch Complex 41, Cape Canaveral Air Force Station, Florida 

Mission Information: United Launch Alliance will use an Atlas V 551 rocket to launch the fourth communications satellite in the Advanced Extremely High Frequency (AEHF) series for the U.S. Air Force.

AEHF satellites provide highly-secure, jam-proof connectivity between U.S. national leadership and deployed military forces. Atlas V rockets successfully launched the first three AEHF satellites in 2010, 2012 and 2013 as the new constellation was formed in geosynchronous orbit 22,300 miles above Earth.

Launch Notes: This will be 131st mission for United Launch Alliance and our 50th launch for the Air Force. It is the 79th for an Atlas V rocket and the 9th in the 551 configuration.

Launch Updates: To keep up to speed with updates to the launch countdown, dial the ULA launch hotline at 1-877-852-4321 or join the conversation at www.facebook.com/ulalaunch, twitter.com/ulalaunch and instagram.com/ulalaunch; hashtag #AtlasV
 
Go Atlas! Go Centaur! Go AEHF-4!

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https://www.ulalaunch.com/missions/atlas-v-aehf-4
ЦитироватьAV-073
    [/li]
  • Height: 197 feet
  • Weight: 1.3 million pounds
  • Thrust: 2.7 million pounds
The Atlas V 551

United Launch Alliance's Atlas V rocket is a workhorse for the U.S. military, intelligence community and scientific researchers, having flown 78 successful missions since debuting in August 2002. Developed as a modular vehicle, each Atlas V is tailored to the needs of its passenger by adding as many as five side-mounted solid rocket boosters for increased lift performance and a variety of available payload fairings in various diameters and lengths to protect satellites during atmospheric ascent. The high-energy Centaur upper stage, which has been used to send spacecraft to every planet in our solar system, is incorporated into Atlas V to deliver the payloads to their intended destinations.

For the AEHF-4 mission, the Atlas V 551 variant will be used. The rocket features a kerosene-fueled common core booster, five strap-on solid rocket motors, the hydrogen-fueled Centaur upper stage and a five-meter-diameter payload fairing. This configuration launched the New Horizons spacecraft to Pluto and the Juno probe to Jupiter, plus the Navy's five MUOS satellites and the Air Force's AFSPC-11 mission.

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Страница миссии обновлена

https://www.ulalaunch.com/missions/atlas-v-aehf-4
Цитировать• Launch Date: Wednesday, Oct. 17, 2018
• Launch Time: 12:15-2:15 a.m. EDT
• Launch Broadcast: Tune in at Oct. 16 at 11:55 p.m. EDT
04:15 (UTC) 17.10.2018, 07:15 (ДМВ) 17.10.2018

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Компания ULA выпустила брошюру миссии

AEHF4_MOB_Final.pdf - 3.3 MB, 2 стр, 2018-10-03 18:09:51 UTC


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ЦитироватьGlenn Davis‏ @GDavisPhotos 1 дн. назад

What an amazing experience getting to drive one of the @ulalaunch escort vehicles through the middle of the night as we transported #AEHF4 to the Vertical Integration Facility. . . .
@torybruno #AtlasV #STEM #coolestjob #Space #technology #rocket #NASA #NASA60th

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ЦитироватьKen Kremer‏ @ken_kremer 6 окт.

Advanced Extremely High Frequency-4 #AEHF4 jamresistant national security comsat for @usairforce #SpaceCommand rolled overnight inside 5m payload fairing to #pad41 for Oct17 launch by @torybruno most powerful @ulalaunch #AtlasV #ULA #USAF. Cred @ken_kremer http://www.facebook.com/spaceupclose321/ ...

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tnt22

ЦитироватьEmre Kelly‏Подлинная учетная запись @EmreKelly 5 окт.

Launch hazard area issued for upcoming 10/17 ULA #AtlasV launch from CCAFS. Two-hour window to launch AEHF-4 opens at 0015 ET (0415 UTC). Rocket will be set to its most powerful 551 configuration.

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